CN211116972U

CN211116972U - Safety tongs fixing structure

Info

Publication number: CN211116972U
Application number: CN201921937558.7U
Authority: CN
Inventors: 陈佳佳; 俞振伟; 钱伟华; 朱豪
Original assignee: Hengda Fuji Elevator Co Ltd
Current assignee: Hengda Fuji Elevator Co Ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-07-28
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses a safety gear fixing structure, which comprises a straight beam (10), wherein the upper end of the straight beam (10) is provided with a thick positioning hole (11) which is in one-to-one correspondence with a mounting hole of the safety gear, and the diameter of the thick positioning hole (11) is larger than that of the mounting hole; the clamping plate is characterized by further comprising a clamping plate (20) arranged on the outer surface of the straight beam (10), the clamping plate (20) is a bending plate with a U-shaped cross section, and clamping holes (21) which correspond to the mounting holes one to one and are equal in size are formed in the clamping plate (20). The utility model has the characteristics of compromise overlap ratio height and simple to operate. Furthermore, the utility model discloses still have locking effect.

Description

Safety tongs fixing structure

Technical Field

The utility model relates to a safety tongs fixed knot constructs, especially takes fixed knot of mounting hole safety tongs to construct.

Background

Many safety tongs of elevator all are provided with a set of screw thread mounting hole at the back, and convenience of customers directly fixes safety tongs on the straight beam. The straight beam of the elevator is generally made by bending, and under the condition that the net height of the elevator car mostly exceeds 2 meters, the length of the straight beam is only small. It is very difficult to machine a set of positioning holes on such a large part, which correspond exactly to the mounting holes of the safety gear and which are equally large, and if fixed in this way, the holes are prone to being misplaced and locked. Therefore, the clamping holes in the existing straight beam are basically larger than the diameter of the mounting hole, so that the processing difficulty is reduced, and the assembly fault tolerance rate is improved.

However, macropores, although convenient, have associated problems with overlap. The safety tongs are respectively arranged on the two straight beams, when the rope breaking fault occurs, the power supply is cut off, and the safety tongs on the two sides simultaneously act and embrace the track, so that the out-of-control car is protected. If the centers of the two safety gears are not on the same plane, the safety gears cannot be clamped asynchronously, so that the lift car cannot be normally stopped within an effective distance, and personal safety is threatened even in severe cases. The large hole structure on the existing straight beam has redundant space in assembly, so that the two safety tongs have no relevant reference, and the problem of non-coincident centers is easy to occur.

Therefore, the existing safety gear fixing structure has the problems that the high contact ratio and the convenience in installation cannot be considered at the same time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a safety tongs fixed knot constructs. The utility model has the characteristics of compromise overlap ratio height and simple to operate.

The technical scheme of the utility model: a safety gear fixing structure comprises a straight beam, wherein the upper end of the straight beam is provided with thick positioning holes which correspond to mounting holes of safety gears one by one, and the diameter of each thick positioning hole is larger than that of each mounting hole; still including setting up the cardboard at the straight beam surface, the cardboard is the bending plate that the cross-section is the U type, is equipped with on the cardboard with the mounting hole one-to-one and the card hole of equidimension.

In the fixing structure of the safety gear, the distance between the inner walls of the clamping plates is equal to the width of the straight beam.

In the fixing structure of the safety tongs, the fixing structure of the safety tongs further comprises a pin barrel arranged in the clamping hole, the pin barrel comprises a barrel body attached to the inner wall of the clamping hole, a clamping hook for hooking the inner wall of the straight beam is annularly distributed at one end of the barrel body, and an annular outer edge is arranged at the other end of the barrel body.

In the fixing structure of the safety gear, the pin cylinder is an aluminum cylinder.

In the fixing structure of the safety gear, the thickness of the pin cylinder is not more than 0.2 mm.

In the fixing structure of the safety gear, the number of the hooks is not more than 4.

Compared with the prior art, the utility model discloses a set up the cardboard outside straight beam, from this straight beam is responsible for thick location and installation basis, and the cardboard is responsible for accurate location, and is completely spacing with safety tongs and straight beam, therefore two safety tongs under same frame realize the relevance on the location, effectively guarantee its central high coincidence. Because it is relatively simple to beat accurate card hole on the less cardboard of size, only need during the installation again through transition fit card outside straight beam, consequently the utility model discloses it is also relatively simple on the processing assembly.

Furthermore, the small-size U type cardboard is buckled with the design width of straight beam, and the cardboard that buckles more accurately can also be used for detecting the width of straight beam, guarantees its size of bending.

Further, the pin barrel structure can realize temporary fastening of the clamping plate and the straight beam. No matter what posture, only one operator is needed to fix the safety tongs, so that the labor is saved, and the operation is convenient.

Furthermore, when the clamping hook of the pin cylinder is installed, the clamping hook is extruded and deformed by the safety tongs and the straight beam, is clamped into the thread of the bolt, and can play a role in preventing looseness.

To sum up, the utility model has the characteristics of compromise degree of coincidence height and simple to operate. Furthermore, the utility model discloses still have locking effect.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the pin barrel;

fig. 3 is a schematic view of the present invention;

fig. 4 is a schematic view of the finished product of the present invention.

Reference numerals: 10-straight beam, 11-coarse positioning hole, 20-clamping plate, 21-clamping hole, 30-pin cylinder, 31-cylinder body, 32-clamping hook, 33-outer edge and 40-safety gear.

Detailed Description

The present invention will be further described with reference to the following examples, which are not intended as a limitation to the present invention.

Example (b): a safety gear fixing structure comprises a straight beam 10, wherein the upper end of the straight beam 10 is provided with a thick positioning hole 11 corresponding to a mounting hole of a safety gear 40 one by one, and the diameter of the thick positioning hole 11 is larger than that of the mounting hole. The outer surface of the straight beam 10 is provided with a clamping plate 20, the clamping plate 20 is a bent plate with a U-shaped section, and the distance between the inner wall of the clamping plate 20 is equal to the width of the straight beam 10. The clamping plate 20 is provided with clamping holes 21 which correspond to the mounting holes one by one and are equal in size.

The pin cylinder 30 is arranged in the clamping hole 21, the pin cylinder 30 comprises a cylinder body 31 attached to the inner wall of the clamping hole 21, a clamping hook 32 for hooking the inner wall of the straight beam 10 is distributed at one end of the cylinder body 31 in an annular mode, and an annular outer edge 33 is arranged at the other end of the cylinder body 31.

The pin cylinder 30 has a thickness of not more than 0.2mm and is preferably made of aluminum sheet. The number of hooks 32 does not exceed 4.

Taking the specific size as an example, the width of the straight beam 10 for installing the safety gear is 160mm, the distance between the inner walls of the clamping plates 20 is 160mm +0.2mm, and the safety gear is directly clamped at the back of the straight beam 10 in a seamless manner. The safety tongs are provided with a group of mounting holes of M12, a coarse positioning hole 11 on the straight beam 10 is phi 13.5mm, a clamping hole 21 on the clamping plate 20 is phi 12+0.2mm, an opening is phi 12+0.2mm, the actual diameter of a bolt of M12 is phi 11.75-11.9mm, the mounting holes of the tool and the mounting holes of the safety tongs realize 0 clearance fit, and the purpose of ensuring the centers of the left and right safety tongs to coincide with the center of the guide rail is achieved.

When the installation is carried out, the clamping plate 20 is firstly clamped on the straight beam 10, the clamping hole 21 is aligned to the rough positioning hole 11 by sliding, and then the pin cylinders 30 are sequentially plugged. The pin cylinder 30 realizes the temporary fastening of the clamping plate 20 and the straight beam 10 through the outer edge 33 and the clamping hook 32, so that the clamping plate 20 cannot be separated, and the two hands of an operator can be fully used for screwing the bolt to fix the safety gear 40.

The pin barrel 30 is a thin metal product, and preferably an aluminum material. As shown in fig. 3, when the fixing bolt of the safety gear 40 is screwed in place, the hook 32 is deformed by compression, and the locked thread can also play a role in preventing looseness. The final mounting effect is shown in fig. 4.

Claims

1. The utility model provides a safety tongs fixed knot constructs which characterized in that: the safety tongs comprise a straight beam (10), wherein the upper end of the straight beam (10) is provided with thick positioning holes (11) which correspond to mounting holes of the safety tongs one by one, and the diameter of each thick positioning hole (11) is larger than that of each mounting hole;

the clamping plate is characterized by further comprising a clamping plate (20) arranged on the outer surface of the straight beam (10), the clamping plate (20) is a bending plate with a U-shaped cross section, and clamping holes (21) which correspond to the mounting holes one to one and are equal in size are formed in the clamping plate (20).

2. A safety gear fixing structure according to claim 1, wherein: the distance between the inner walls of the clamping plates (20) is equal to the width of the straight beam (10).

3. A safety gear fixing structure according to claim 1, wherein: the pin barrel (30) is arranged in the clamping hole (21), the pin barrel (30) comprises a barrel body (31) attached to the inner wall of the clamping hole (21), clamping hooks (32) for hooking the inner wall of the straight beam (10) are distributed at one end of the barrel body (31) in an annular mode, and an annular outer edge (33) is arranged at the other end of the barrel body (31).

4. A safety gear fixing structure according to claim 3, wherein: the thickness of the pin barrel (30) is not more than 0.2 mm.

5. A safety gear fixing structure according to claim 3, wherein: the number of the hooks (32) is not more than 4.